Pressure-regulator.



v G. REGONDI. I PRESSURE REGULATOR.

AI PLIOATION IILED KOV'. 24 1911. RENEWED APR. 18, 1913.

Pnted may 2 Y 1913.

INVENTOI? 622 38 a fie fif I v WITNESSES:

UNITED STATES. PTiTENT OFFICE.

GIlJ'SEPPE REGONDI, OF NEW YORK, N. Y.

. PRESSUREBEGULATOR.

eas es."

Specification Letters Patent;

' Patented Mayj27, 1913.

Application and itovember 24,1911, Serial no. 662,252, Renewed s in is, 1913. Serial 1%. 762,09

I aall whom it may concern:

' Be it known that I, G-Iosnrrn REGQNDI, a

subject of the Kingof .Italy, residing. in, the

borough of Manhattan, city, county, and".

this material having suflicient strength and State-of New York, have-invented certain new and useful Improvements. in Pressure Regulators, of which the following isa full, clear, and exact description, reference being had to the accompanying drawings, forming apart of this specification.

My invention relates to an improved construction of regulating valvefor fluids under pressure, such as used when a fluid has to. be delivered at a uniform and reduced pressure from a high pressure storage tank; and hasfor its object to provide a valve of a a simple and compact construction, carefully devisedin all its minor details, with the objects in view ofmodrate cost of manufacture, extreme sensitiveness, andease of regulation.

My improvements relate especially to the construction of the high pressure valve and to the arrangement of its various parts, and to a special formof the spring actuating the diaphragm inopposition to the said high pressure valve.

Referring to the drawings, Figure 1 is a partly sectional view in elevation of my improved regulating valve, as applied in connection with -a low pressure tank; Fig. 2

is a plan view of the same, partly sectioned;

F'g; 3- is an enlarged sectional view in elevation of the-high pressure valve; and Fig. 4 is a sectional plan view of the same.

The vessel 10 is designed to contain a gas or a liquid under a certain pressure, and may be made of any suitable shape and material. The top of the same is closed by the bottom 11 of the valve casing 12. which I prefer to make, as shown in the drawings, by screwing an upper part 13 to a. lower part 14 integral with or hermetically attached to said bottom part 11, which is also hermetically attached to vessel- 10.

The hollow space inclosed'. by the above -mentioned parts 11,13, 14, is divided, as usual, in two chambers 15,16, divided by a diaphragm 17. The 11 per chamber, 15, communicates freely wit theiatmosphere,

and: is adapted to receive the regulating:

spring. The lower or regulating chamber prevent the escape of resscd at its periphery, the diaphragm 17,

1 means of a washer 19 held in place by the pressure exerted by screwing art .15.

Diaphragm: 17 may. 'be ma e of any suitflexibility; but I prefer to use a disk of heavy oil= cloth of good quality,.which I found to be adapted to give the mosthermetic closure. On the spring side, this is reinforcedby a flexible washer of suitable material clamped between 17 and 19, which is shown in the drawings as being made out of metallic nettin 20; This has the object of relieving the iaphragm of the strains set on the same by the pressure in chamber 16. In-

closed within chamber 15, and actuating the diaphragm, is a regulating spring of anovel and improved form, which is both inexpensive and eflicient, strong and sensitive,

and has the additional advantage of occupying a narrow space close to the diaphragm The same is composed of two, convexed' parts of sheet metal 21. 22, formed with radially mounted through th. top of part13, having its end turned down to a pin' and shoulder 29; pin 21) entcrs'through hole 27, and the The upper shoulder formed by the same, rests against i the upper surface of spring plate 21. The lower spring plate 2:2 rests with its central portion, preferably provided with a big 30, against the central part of reinforcing plate 20.

The high pressure valve is composed of a; lower casing portion 31 secured: to bottom part 11, within which are mounted the other parts.

32 is the upper portion of the casing,

screwed internally to part 31, the cliamber,

thus formed being hermetically closed means of a packing ring 33-inserted between theupper surface of 31 and the lower surface of the nut part 34 of part 32.- The stem part of said part 32- is bored forminga longitudinal chamber 35; the bottom of said chamber is turnedas clearly shown in.

Fig. 3, by forming a central projecting lugs 36. The sameis provided in the center with 38 is a 11gb pressure valve plugformed with a head 39 and a-stem part 40,-the di- 'ameter of'which-is'just a trifle ifllmost unhole 37;"

noticeably smaller than the gamer of The arrangement just describeiil 'for the 3- inlet' of fluids at ahigh pressure ivithin the low pressure chamber, is an important fac-t orsinaller according to themore-or less de-' crease-inpressu're of the low pressure chamher; "it; is inzill'cases considerably larger than-"in" my device, where no free area is open'to the inrush of gas, but only a small clearance obtained by a slight di erence of diameter between the inlet to t-he low pres-- '1 80 surechamber and the plug filling 'the same.

Moreover, the section through which the gas is allowed to pass, is'uniform in all "-'cases', so that-the gas is always fed to the low pressure chamber in a gradual manner,

as preventing the sudden disturbances. in pres sure conditions within the same which usually result in connection with other devices. 4'1 is-a hollow plunger adapted to fit longi'tudinall'y within chamber 35, leaving how- 40 eve'r'some' clearances between its outer sur-' face andt'he surface of chamber 35. A 0011-.

vnient' construction is that shown inthe 'd raivingspFig. {1 in which part 41 is shown with a polygona outline, the diameter of the inclosing circle being the same as the fdiaiheter of chamber 35. Thus between the iaces42 of part 41, and the surface 43 of chamber 35 will be formed chambers or clearances 44 when the several parts are assembled. Chamber 45 internal to part 41 has a bottom arms; externallyll to this, or in} other wor s on the top of part 41, is

'rovided a rim 47 forming a recess 48, and

Q m this is inserted adi sk 49 preferably of QQJoiither.

urin the"'pr0cess of 'manufacture, the

;!o e543 e of part 32 is turned down, thus forming a very, thin wall around the opening" of chamber 35. In this chamber are 06 then inserted hollow plunger 41, a compression spring 50 holding the same against lug 1'86; an extremely fine metalgauze disk 51, and a washer 52 provided with admit: or holes 53.- .The lower ed e ofpart 32 is then G5 ibent inward, forming 51 ing the different nently assembled; A

55 designates a pipe attached/i 56 to part 31-, and leading the fluid un e r pressure from the storage tank or other source of cation between regulating chamber 16; and the interior of vessel 10. The same is preferably bent as shown, so as"to direct the stream of the fluid under pressure coming 'tion. of the valve is more regular and sensitive, probably because the force of the current is smoothed down, and the fluid is evenly distributed on'all sides.

The action of this device is as follows: The spring formed by parts 21 22 having been adjusted by means or screw 28 for a certain pressure, it the pressure of the fluid contained in vessel 10 and in the chamber 16 ,communicating' therewith is suflicient to counterbalance by its action against the diaphragm-lZ-the action of the spring, the different parts will be in the relative. positions shown in the drawings. Spring 50 acting against bottom 46 will force disk 49 against'lug 36, closing hole 37. Disk 49 bethe considerable advantage over the usual type 0t. conical valve of not requiring any special accuracy in manufacturing.

When the pressure of the fluid contained in vessel 10 and chamber 16 decreases, the 'plate spring pushes the diaphragm against the head 39 of plug 38 in opposition to the pressure of spring 50. When the difference the fluid in chamber 16 against the dia phragm, and that exerted by the plate spring against the diaphragm and the plug 38 becomes greater than the pressure exerted against said plug 38 by spring 50 acting against part. 41, plug 38 forces down part 11, and the fluid under high pressure coming from pipe 55 is therefore allowed to enter hole 37 passing through hole 53.

said metal gauze is exceedingly fine, and acts as a filter to prevent. the entrance (if-any solid particle within the high pressurev valve chamber, to insure the correct vworkin of plug 38 and to prevent the plugging 0 the 'tlic wall of hole 37;

tween the hole and the plug is more than sufiicient for permitting the passage of the that the smaller the difference the better the results, any tendency to retard the ino flange 54 retainrush of the fluid from the high pressure supply, to the chamber; formed by'parts ing of leather or other soft material, acts' in this respect most effectively, and has between the two pressures, that exerted by.

metal gauze 51 and ciearancesf44. As stated,

parts mentioned perma- I 57 is a pipe establishing a direct communi from chamber 16 against the bottom of part 31; I have found that by so doing the acclearance existing between said plug and The slightest difi'erencein -diameter begas under pressure; in fact I have noticed I chamber to the low pressure chamber, being beneficial inimproving the regularity of ioperation and the sensitive'ness of the device.

Some regulating valves designed for the same purpose as the one just described, have the high pressure piston directly connected to the diaphragm; this is one point that -I was-careful to avoid in the construction of my improved device, since, as I have stated, it is essential that the diaphragm be absolutely hermetical, and it is entremely diificult to maintain this hermeticity in a movg diaphragm perforated to receive a valve stem. connected to it.

'. From the foregoing it will be seen that .1 provide a simple arrangement of parts inlexfiensive to manufacture, all easily accesfor the purpose'ofrepairs, and the highly satisfactory working of which is due sib e ely to the careful study of. their various details and" not to'any specialcare required in manufacturing. It may be here noted that the washer 19 is preferably made tapering toward the inside, so as to clamp parts 20 and 17 with 0:11 a narrow circular surface or edge, rat er than with a wide surface; this insures a better clam ing action,

I have found his pressure regulating valve to be very sensitive and regular in its action, and therefore eminently suitable for those uses" where these two factors are im-- portant, like for instance in connection with tanks for delivering liquid or gaseous fuel to burners connected with the same, and

especially when said burners are used for -lighting purposes and the steadiness of the fiame is all important.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent of the United Statesis:

1. In a device of the character described, 'andin combination with a high pressure and a low pressure chamber, a regulating valve comprising a hollow casing connected to, the high pressure chamber, a hollow' 'closs said valve previous to its entering'said hollow closing member, a spring within said plunger controlling the same, a washer of plastic material retained by said plunger against said lug closing said opening, a Ionv gitudinally movable plug inserted through said openipg and resting against said plun- 'ger having a section, area a trifle smaller than the area of said opening, and a' diaphragm controlling said plug retaining the same in position; substantially as described,

and for the purposes as set forth.

2. The combination of a-body, havingan inwardly projecting flange, a diaphragm on said flange, a flexible backing member for the same, a hollow cover secured to said body clamping said diaphragm and backing member against said flange, a compress'ion spring between said cover and said backing member, a hollow valve casing secured to the bottom of said body having an opening connecting the, same internally to said body, a plunger closing said opening, means for holding said plunger against sa'id opening, and a longitudinally movable plug inserted through said opening and held against said plunger by the action of said diaphragm, having a section area a trifle smaller than the area of said opening; sub stantially as described, and for the purposes as set forth.

-3. The combination of a body, having an inwardly projecting flange, a diaphragm on said flange, a-flexible backing member for the same, a hollow cover secured to said body clampingsaid diaphragm and backing member against said flange, a spring composed of two convex metal plates having radial arms interlocking with each other between said cover and said backing member, ascrew through said cover adjusting the pressure of said spring, a hollowvalve casing secured to the bottom of said body 0011- nected to the high pressure fluid supply, a hollow closing member secured to the same provided with an inwardly projecting lug having an opening connecting the inside of said casing with the inside of said body, a hollow plunger movable within said hollow member, a wire screen filtering the fluid fed to said valve'previcus to its entering said hollow closing member, a spring within said plunger controlling the same, a washer of plastic material retained by said. plunger against said lug closing said opening, a longitudinally movable plug inserted through said opening and held against said plunger by said diaphragm having a section area a trifle smaller than the area of said opening, and a pipe attached to the bottom of said body conveying the fluid fed thereto against the bottom of said valve casing; substantially as escribed, and for the .purposes as set forth.

GIUSEPPE REGONDL \Vitnesscs LOUIS Fnar, GUmo SACERDO'IE, 

